I spent three years going throug infertility treatments. My temp went up and I wasn't pregnant, just catching a little bug. I'd throw up and I wasn't pregnant, just something I ate. I had sore breasts and wasn't pregnant - hormones from the medication. I missed periods and wasn't pregnant - just irregular.
When we did get pregnant without trying, I missed my first trimester and lived life completely normal - all the things you shouldn't do (I've never been a smoker) - drinking, physical activity, not getting enough rest, eating junk.
She turned out pretty darn good.